Fig. 3

Norm vectors for the segmented eye bulbs (normalized images) in a subject. The upper row in black shows the predetermined eye state (1 closed, 0 opened). RB (right) and LB (left) are the x/y/z dimensions of the norm (unity) vector describing the absolute eye position at each given time point. The correlation coefficients for the x/y/z dimensions of the left and right eyes are as follows: x-dimension 0.978, y-dimension −0.636 and z-dimension 0.994. The correlations with predetermined eye states are x-dimension 0.919 (left) and 0.920 (right), y-dimension 0.704 (left) and −0.838 (right) and z-dimension 0.930 (left) and 0.938 (right). X-axis: time in seconds; y-axis of left/right eye: x/y/z dimensions of norm vector (in voxel)